John A. Kosiak, MD

Dr. Kosiak joined MRO in 1986.

Primary Location

Mercy Radiation Therapy Center

Clinical Interests

Treatment of lymphomas, breast and gynecologic malignancies

Medical School

University of Minnesota Medical School, Minneapolis, MN


St. Paul Ramsey Medical Center, St. Paul, MN


University of Minnesota, Minneapolis, MN – Radiation Oncology

Board Certification

Radiation Oncology

Special Interests

Hunting, fishing, and skiing